added default values for instance_class and region

Author: andrefaria24

variables.tf

@@ -16,6 +16,7 @@ variable "db_admin" {
 variable "region" {
   description = "AWS Region"
   type        = string
+  default     = "us-east-2"
   validation {
     condition     = contains(["us-east-1", "us-east-2", "us-west-1", "us-west-2"], var.region)
     error_message = "Supported regions: us-east-1, us-east-2, us-west-1, us-west-2"
@@ -25,6 +26,7 @@ variable "region" {
 variable "instance_class" {
   description = "Instance Size"
   type        = string
+  default     = "db.t3.micro"
   validation {
     condition     = contains(["db.t3.micro"], var.instance_class)
     error_message = "Supported sizes: db.t3.micro"